The viral footage starts with the blonde Czech mum sitting on a couch and being asked questions by another woman off-screen.

She tells the interviewer she's into fitness, is separated, and has two children before saying she would never do porn because of her relatives.

She is later seen rubbing oil over herself before having sex with a man.

At the time, Lucie said in the interview for Czech national broadcaster TV Nova that she was under the influence of drugs at the porn casting in Prague.

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OILY: Lucie oils herself up in the video

When it was spotted by her pupils, she was immediately fired, but speaking to local TV she said she believed that the air - coming into the casting room from an air conditioning unit - had been drugged.

She said: "I was looking for an extra job and I found an advertisement looking for toned figures for a photoshoot. I thought it was for underwear.

"I think they drugged me with cocaine. I am sure that something was there.

"My behaviour changed and I felt very relaxed and comfortable. I would not be able to do something like this under normal circumstances."

However, after the police dismissed the claims, when TV Nova contacted the teacher, telling her of the police investigation result, she replied: "I really do not want to talk about it anymore."